I have somewhere in my network a dhcp server.
From that dhcp-server router runs a vlan over several nodes towards two units. These units now connect to different type of clients…
rbA is router somewhere down the line, vlan comes out of trunk (trunk vlan and its trunked vlans become visible on the real gateway-interface)
Like:
ether1-gateway
vlan-trunk
vlan1a
vlan1a now gets bridged to same vlan1b interface (can’t have same name, but ID and flag are the same) residing on ether2.
ether2 now connects to a radio that has both ether and wlan interface bridged. (Thus transparant bridge, vlan are not mentioned here)
radio’s wlan interface connects now to two remote stations. CPE1 and CPE2
CPE1 is just again a routerboard with wlan1 and ether1 bridged, so no sign of the vlan.
Connected to ether1 is an omnitik.
Omnitik ether5 = gateway, and on this ether5 gateway resides the vlan1.
Now a bridge bridges vlan1 with wlan1 so all client cpe’s now pick up IP addresses from distant dhcp-server and all traffic is running through the vlan.
CPE2 is just an SXT connected to a 3rd party switch, and behind the switch some clients are connected with their PC’s, wifi routers or whatever…
CPE2 is having the vlan1 residing on the wlan1 interface.
Now I bridge the vlan1 with the ether1 interface.
If I put a dhcp-client on the bridge, it picks up an IP from distant dhcp server. So the link and vlan are working.
But client devices are not getting an IP.
In the dhcp-server I can see the request of the client’s device is made, the IP is than offered, to fall back into “waiting” and inmeditely offered again.
But the client device never gets the IP! And thus not traffic, no internet etc…
What am I doing wrong?
Double checked the vlan ID’s.
Both vlan end points that connect to the interface that connects to client devices have arp proxy enable.
So, the only difference I see is that in the CPE1 setup, all clients are basically other MT routers. (CPE antenna’s)
Where in the CPE2 setup clients are 3rd party devices, sitting behind some cheap switch.
Anybody can render me any advice?
CPE2:
/interface wireless> pr
Flags: X - disabled, R - running
0 R ;;; Backhaul from "R"
name="wlan1" mtu=1500 mac-address=D4:CA:6D:13:6D:75 arp=enabled interface-type=Atheros AR92xx mode=station-bridge ssid="" frequency=5180 band=5ghz-onlyn
channel-width=20mhz scan-list=5505 wireless-protocol=nv2 wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no bridge-mode=enabled
default-authentication=yes default-forwarding=yes default-ap-tx-limit=0 default-client-tx-limit=0 hide-ssid=no security-profile=default compression=no
/interface bridge> pr
Flags: X - disabled, R - running
0 R name="bridge1" mtu=1500 l2mtu=1526 arp=enabled mac-address=D4:CA:6D:13:6D:75 protocol-mode=rstp priority=0x8000 auto-mac=yes admin-mac=00:00:00:00:00:00
max-message-age=20s forward-delay=15s transmit-hold-count=6 ageing-time=5m
/interface bridge port> pr
Flags: X - disabled, I - inactive, D - dynamic
# INTERFACE BRIDGE PRIORITY PATH-COST HORIZON
0 vlan110_CP1&E1 bridge1 0x80 10 none
1 ether1 bridge1 0x80 10 none
/interface vlan> pr
Flags: X - disabled, R - running, S - slave
# NAME MTU ARP VLAN-ID INTERFACE
0 R ;;; end point of vlan110_CP1; vlan between M7 and AP-CP1 & CP-E1 clients
vlan110_CP1&E1 1500 proxy-arp 110 wlan1